Shoreham-by-Sea · West Sussex
Retaining wall repairs in Shoreham-by-Sea
If a wall in your Shoreham-by-Sea garden is leaning forward or weeping after rain, it is worth acting before winter adds more water to the soil. Clearing drainage can be enough for a low wall, while bigger walls may need rebuilding on new footings.
Guide price from£560per wall inc VAT

- Postcodes
- BN42, BN43
- Population
- about 19,000
- Area
- West Sussex
- Pricing region
- South East
What is the ground like in West Sussex?
Shoreham-by-Sea (BN42, BN43) has around 19,000 residents and sits in West Sussex. Nearby, we also cover Lancing (2 miles), Worthing (5 miles) and Brighton (6 miles).
West Sussex is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in West Sussex: Wealden cottages, 1930s semis and bungalows on the coast, and new-town estates in Crawley.
Repair options we may recommend
Structural repair and partial rebuild
A leaning or bulging section is taken down, the soil behind dug out and supported, and the wall rebuilt on a new footing with drainage and, where specified, reinforcement tied into the sound wall either side. The engineer’s design sets footing size and wall thickness.
Best for: A section that has moved while the rest stays sound
Temporary support and reducing load
While a repair is designed and programmed, a dangerous wall may be propped, or soil and loads near the top removed to reduce the push. Moving parked cars or a shed back from the wall is sometimes the simplest first step.
Best for: Walls that are moving now and need making safe
What to expect when we carry out retaining wall repairs
Site assessment
On site we measure height and lean, check the drainage and the ground at the top and bottom, and look at access for digging out. Walls that support a drive, path or building, or retain more than a modest height, are referred to an engineer.
Written quote
You receive a no-obligation written quote covering demolition, excavation, temporary support, the footing, the new or repaired wall, drainage and spoil removal. It becomes a fixed price in writing once the repair is specified.
Build and drain
The failing section is taken down, the soil supported in short lengths, and the footing cast. The wall is rebuilt with drainage behind it, backfilled with free-draining material, and building control inspects where the work needs it.
Is it time for retaining wall repairs? Common signs
- Wall leaning forward, or bulging out in the middle of its length
- Water seeping through joints, or white salt staining, after rain
- No weep holes, or weep holes that never seem to drain
What should you budget for retaining wall repairs in Shoreham-by-Sea?
For Shoreham-by-Sea we use South East rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| Item | Guide price | Per |
|---|---|---|
| Minor repairs and drainage | £560 – £2,250 | per wall |
| Structural repair or partial rebuild | £3,350 – £16,800 | per wall |
| New retaining wall | £225 – £505 | per m² of wall face |
Rules for retaining wall repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Your retaining wall repairs questions
How much should I budget for retaining wall repairs in Shoreham-by-Sea?
Guide prices for retaining wall repairs in Shoreham-by-Sea start from about £560 per wall, including VAT, on South East rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Shoreham-by-Sea?
We do. Shoreham-by-Sea and the surrounding area are covered, including nearby Lancing and Worthing. A free initial assessment from your photos is the first step.
Why do houses in West Sussex crack?
North West Sussex around Crawley and Horsham sits on Weald Clay, the South Downs are chalk, and the coastal plain has brickearth and gravels. The Weald Clay is prone to shrink-swell movement near trees. Only an investigation can say why a particular building has moved.
Is a leaning retaining wall dangerous?
It can be, especially if the lean is getting worse, the wall is tall, or there is a path, drive or building next to it. A wall that has leaned slightly for decades may be stable, but one that has moved recently should be kept clear and assessed soon.
Do I need an engineer for a retaining wall?
For low walls holding back a planting bed, often not. Walls retaining more than a modest height, often taken as more than about a metre, or supporting a drive, path, building or neighbour’s land, generally need an engineer’s design. An independent chartered structural engineer is appointed where needed, and we can arrange this.
Related work in Shoreham-by-Sea
- Floor joist repairs
- Crack stitching
- Extension pulling away repairs
- Subsidence insurance claim repairs
- Brick arch repairs
Retaining wall repairs near Shoreham-by-Sea
Get a free initial assessment of a bulging or cracked retaining wall in Shoreham-by-Sea from your photos or a call, before the next wet spell.